ASTROSAT CZTI

Data Quality Report

Orbit 37793

Creation date: 2024-06-27T21:44:30.038067
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_057T01_9000005346_37793cztM0_level2.evt modeM0/AS1T05_057T01_9000005346_37793cztM0_level2_quad_clean.evt
Size (bytes)413,812,80079,773,120
Size394.6 MB 76.1 MB
Events in quadrant A2,883,589521,131
Events in quadrant B2,782,589523,097
Events in quadrant C2,829,845518,346
Events in quadrant D3,676,706482,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117073
B0114892
C0115092
D0143832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5293220.415643%
B5293180.340072%
C5293260.491215%
D52931562.947289%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7115 5294 7 7 0.10% 0.13%
B 7115 5294 5 5 0.07% 0.09%
C 7115 5294 12 12 0.17% 0.23%
D 7115 5294 141 141 1.98% 2.66%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 330855 2518.24 647 637 131.1
A 13 248 20814 153.87 647 637 131.1
A 13 6 15652 114.5 647 637 131.1
B 0 229 101642 827.74 639 624 122.0
B 0 219 58843 477.04 639 624 122.0
B 0 230 37266 300.24 639 624 122.0
C 15 214 246896 1707.51 622 628 144.2
C 0 10 111424 768.21 622 628 144.2
C 0 207 42818 292.53 622 628 144.2
D 7 223 331009 2186.21 620 604 151.1
D 2 249 246478 1626.89 620 604 151.1
D 2 250 195028 1286.46 620 604 151.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter